Container shape

Abstract

A bottom profile for a cylindrical two-piece drawn steel can is configured during manufacture so that the resultant shape may subsequently be altered by pushing downward at the outer profile ring adjacent the periphery with a simple cylindrical tool, thereby achieving a finished container with the desired configuration to be functionally and operationally interchangeable in a packing and processing line with traditional three-piece containers.

What is claimed is: 
     
       1. In an improved two-piece metal can having a seamless container body of circular cross-section formed of a thin material into an integral side and bottom wall, a circular closure adapted to be joined to said side wall by an annular doubleseam having five adjacent layers of metal, the improvement wherein the profile of the area next adjacent the juncture of the side and bottom wall includes: (a) an outwardly radial extending lower side wall portion forming a chime-like bead having its most distal extent near the bottom periphery,   (b) a substantially flat circular ring-shaped section extending generally normal to said side wall portion and in-line with the bottom most plane of the container bottom,   (c) an interior annular side wall extending into the container from the bottom most plane of said bottom and joining the inside edge of said ring-shaped section to a recessed central panel of said bottom, and   (d) an annular convolution disposed substantially intermediate said bottom distal extent of said chime-like bead and said inside edge of said ring-shaped section, said convolution being located at said substantially flat circular ring-shaped section.   
     
     
       2. The can of claim 1 wherein the thin seamless container body is formed in a multiple drawing operation of a precoated metallic sheet, the coating being an organosol and the metal being a tin free steel of the chromium type. 
     
     
       3. The can of claim 1 wherein the seamless container body being formed of electrolytically deposited tinplate in a multiple drawing operation and thereafter coated. 
     
     
       4. The can of claim 1 wherein said annular convolution is adapted to cooperate with the central upper part of a doubleseam in mating engagement when the central axis of two cans of substantially similar diameter are aligned as during stacking. 
     
     
       5. The can of claim 4 wherein said circular ring-shaped section extending axially outwardly to a greater extent at said inside edge than the part thereof which connects to said side wall bottom periphery after the can has been packed and subjected to pressures resulting from hot filling or processing. 
     
     
       6. The can of claim 1 wherein said chime-like beading and said circular ring-shaped section form a relatively open inwardly can profile adapted for cooperatively assuring a continuous interior coating thereof. 
     
     
       7. The can of claim 1 wherein said distal extent of said bottom periphery is identical to the distal extent of said annular doubleseam after it is seamed hermetically to a closure applied to the top of the can.